Class SparqlNodeComparer

Comparer class for implementing the SPARQL semantics for the relational operators.

Inheritance

object

SparqlNodeComparer

SparqlOrderingComparer

Implements

ISparqlNodeComparer

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Namespace: VDS.RDF.Query

Assembly: dotNetRdf.dll

Syntax

public class SparqlNodeComparer : ISparqlNodeComparer

Constructors

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SparqlNodeComparer(CultureInfo, CompareOptions)

Create a new comparer that will use the specified culture and options when comparing string literals.

Declaration

public SparqlNodeComparer(CultureInfo culture, CompareOptions options)

Parameters

Type	Name	Description
CultureInfo	culture	The culture to use for string literal comparison.
CompareOptions	options	The options to apply to string literal comparison.

Properties

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Culture

Get the culture to use for string literal comparison.

Declaration

public CultureInfo Culture { get; }

Property Value

Type	Description
CultureInfo

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Options

Get the options to apply to string literal comparison.

Declaration

public CompareOptions Options { get; }

Property Value

Type	Description
CompareOptions

Methods

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BooleanCompare(INode, INode)

Compare two nodes as boolean values.

Declaration

protected virtual int BooleanCompare(INode x, INode y)

Parameters

Type	Name	Description
INode	x
INode	y

Returns

Type	Description
int

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BooleanCompare(IValuedNode, IValuedNode)

Compare two nodes as boolean values.

Declaration

protected virtual int BooleanCompare(IValuedNode x, IValuedNode y)

Parameters

Type	Name	Description
IValuedNode	x
IValuedNode	y

Returns

Type	Description
int

Exceptions

Type	Condition
RdfQueryException

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Compare(INode, INode)

Compares two Nodes.

Declaration

public virtual int Compare(INode x, INode y)

Parameters

Type	Name	Description
INode	x	Node.
INode	y	Node.

Returns

Type	Description
int	0 if nodes compare equal, greater than 0 if `x` compares as greater than `y`, less than 0 if `y` compares greater than `x`.

Exceptions

Type	Condition
RdfQueryComparisonException	Raised if the nodes `x` and `y` cannot be compared.

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Compare(IValuedNode, IValuedNode)

Compares two valued Nodes.

Declaration

public virtual int Compare(IValuedNode x, IValuedNode y)

Parameters

Type	Name	Description
IValuedNode	x	Node.
IValuedNode	y	Node.

Returns

Type	Description
int	0 if nodes compare equal, greater than 0 if `x` compares as greater than `y`, less than 0 if `y` compares greater than `x`.

Exceptions

Type	Condition
RdfQueryComparisonException	Raised if the nodes `x` and `y` cannot be compared.

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DateCompare(INode, INode)

Compares two Dates for Date ordering.

Declaration

protected virtual int DateCompare(INode x, INode y)

Parameters

Type	Name	Description
INode	x	Node.
INode	y	Node.

Returns

Type	Description
int

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DateCompare(IValuedNode, IValuedNode)

Compares two Dates for Date ordering.

Declaration

protected virtual int DateCompare(IValuedNode x, IValuedNode y)

Parameters

Type	Name	Description
IValuedNode	x	Node.
IValuedNode	y	Node.

Returns

Type	Description
int

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DateTimeCompare(INode, INode)

Compares two Date Times for Date Time ordering.

Declaration

protected virtual int DateTimeCompare(INode x, INode y)

Parameters

Type	Name	Description
INode	x	Node.
INode	y	Node.

Returns

Type	Description
int

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DateTimeCompare(IValuedNode, IValuedNode)

Compares two Date Times for Date Time ordering.

Declaration

protected virtual int DateTimeCompare(IValuedNode x, IValuedNode y)

Parameters

Type	Name	Description
IValuedNode	x	Node.
IValuedNode	y	Node.

Returns

Type	Description
int

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NumericCompare(INode, INode, SparqlNumericType)

Compares two Nodes for Numeric Ordering.

Declaration

protected virtual int NumericCompare(INode x, INode y, SparqlNumericType type)

Parameters

Type	Name	Description
INode	x	Node.
INode	y	Node.
SparqlNumericType	type	Numeric Type.

Returns

Type	Description
int

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NumericCompare(IValuedNode, IValuedNode, SparqlNumericType)

Compares two Nodes for Numeric Ordering.

Declaration

protected virtual int NumericCompare(IValuedNode x, IValuedNode y, SparqlNumericType type)

Parameters

Type	Name	Description
IValuedNode	x	Node.
IValuedNode	y	Node.
SparqlNumericType	type	Numeric Type.

Returns

Type	Description
int

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TryCompare(INode, INode, out int)

Attempt to compare the specified nodes.

Declaration

public bool TryCompare(INode x, INode y, out int result)

Parameters

Type	Name	Description
INode	x	Node to be compared.
INode	y	Node to be compared.
int	result	Comparison result.

Returns

Type	Description
bool	True if a comparison could be made, false otherwise.

Remarks

result is set to 0 if the nodes compare as equal, a positive value if x compares greater than y, or a negative value if y compares greater than x.

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TryCompare(IValuedNode, IValuedNode, out int)

Attempt to compare the specified nodes.

Declaration

public bool TryCompare(IValuedNode x, IValuedNode y, out int result)

Parameters

Type	Name	Description
IValuedNode	x	Node to be compared.
IValuedNode	y	Node to be compared.
int	result	Comparison result.

Returns

Type	Description
bool	True if a comparison could be made, false otherwise.

Remarks

result is set to 0 if the nodes compare as equal, a positive value if x compares greater than y, or a negative value if y compares greater than x.

Implements

ISparqlNodeComparer

Extension Methods

Extensions.ToSafeString(object)

Extensions.AsEnumerable<T>(T)